Using The Right Engine Oil

/Using The Right Engine Oil
Using The Right Engine Oil2017-05-19T20:13:09+00:00

Working closely with European vehicle manufacturers our oils are developed, tested and certified to the exacting standards you would expect of a leading German manufacturer. Specialising in the production of oils with the latest OEM approvals and specifications, Liqui-Moly oil products are the perfect match for European and High Performance engines.

SAE (Society of American Engineers) multi-grade classifications indicate the oil’s viscosity (or thickness) on start up and at normal operating temperatures. Most car makers specify multi-grade oils because they are designed to flow easily at cold temperatures, yet retain the right lubricating properties when hot.

For example:

The 5W (W = winter) indicates how the oil will flow when cold. The 40 refers to the oils viscosity at operating temperature.



Higher viscosity oil (10W-60) delivers higher thermal stability where as lower viscosity oil (5W-40) minimises fuel consumption and emissions by reducing the energy required to circulate the oil. The correct viscosity is specified by the manufacturer and is designed to optimise the efficiency, performance and life of the engine.

When engines are required to produce more and consume less with extended service intervals, they are highly stressed. Many European vehicle manufacturers consider the generally established oil specifications to be inadequate or out-dated as the function of engine oil has dramatically changed due to these advancements. Using motor oil that does not specifically meet the exacting standards of the manufacturer may void your warranty and can lead to extra fuel consumption, increased carbon emissions, premature engine wear and possible damage.

The performance characteristics of oil are determined by the quality of the base oil as well as the chemical agents that are blended with it. So the engine oil SAE viscosity grade is only part of the story. To ensure you select the right oil for your specific make and model refer to the vehicle owner’s manual for the correct viscosity/specifications and select the appropriate product. Alternatively refer to the Liqui-Moly Oil Guide HERE.



The properties of engine oil can be enhanced by using oil additives. It is common to use purpose-designed treatments as problem solvers or friction modifiers that work with the existing chemical agents or additive package within the oil. The DNA of the oil isn’t compromised so it will continue to meet the manufactures spec. Using such additives are recommended as an engine starts to wear or for high load operation such as regular full throttle/high speed driving, or long distance/heavy towing.

When changing the oil, flushing the engine prior to adding new oil is really important. Regardless of any self-cleaning properties of existing oil, putting fresh oil into a dirty engine makes no sense and reduces the long term performance and efficiency of the engine.

Lower friction means less heat, less fuel consumption, less pollution and optimised engine performance with smoother running.



Fuel is the raw energy source needed for an engine to function. It travels through a number of components along the way before it’s converted to power via the combustion cycle. It’s a commercial reality that today’s fuels contain a number of contaminants, and coupled with the by-product of combustion, carbon and other harmful deposits are formed. The effects are gradual and may go unnoticed, however performance and efficiency can be compromised in as little as 2,000 to 5,000 kilometres.

Therefore it’s important to take steps to minimise the adverse effects on your engines fuel and combustion components. You may also want to consider enhancing the fuels combustion properties to noticeably boost performance.


Diesel, compared with other types of fuels, is a far less refined product containing higher levels of impurities, which in a relatively short period of time will begin to impact on the engine’s performance and efficiency. Using specially formulated diesel additives that removes residues, increase cetane level or increase combustion intensity is an effective way to maintain a quiet, smooth and efficient engine – which is ultimately what every diesel owner wants.


Removes harmful deposits, maximises engine life, restores full engine compression and maintains performance.


Specifically designed to target minor engine problems then rectify in a fast, simple and effective way.